I'm having the same problem as well (as of 11:00pm on Feb 5)
Kinana wrote...
Logged in today and went to my Collections and noticed that all of them have the message "There was a problem. Page not found." Assuming this is a big, will they be restored or should I assume they're all gone for good? Really hoping the latter is not the case : (
I happened to remember some of the works that were in some of my Collections folders and went to check on their individual pages. After clicking on the drop down window next to the "Add to favorties" button, I saw that the works were still check-marked to the Collections folders I placed them in. So I believe that everything inside of a Collections folder should still be there, but it's just that we can't access it until the bug gets fixed.